HarmonyOS 键盘关闭问题

使用示例2的demo。把// PageTwo.ets换成下面的，您试一下。

跳转到PageTwo页面后 点击 keyboardHeightChange 开启监听软键盘高度

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-basic-components-navigation-V5#示例2

// PageTwo.ets
import web_webview from '@ohos.web.webview';
import { inputMethod } from '@kit.IMEKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { window } from '@kit.ArkUI';

@Builder
export function PageTwoBuilder(name: string, param: Object) {
  PageTwo()
}

@Component
export struct PageTwo {
  @State keyBoardHeight: number = 0;
  pathStack: NavPathStack = new NavPathStack()
  webviewController: web_webview.WebviewController = new web_webview.WebviewController();
  private menuItems: Array<NavigationMenuItem> = [
    {
      value: "1",
      icon: 'resources/base/media/undo.svg',
    },
    {
      value: "2",
      icon: 'resources/base/media/redo.svg',
      isEnabled: false,
    },
    {
      value: "3",
      icon: 'resources/base/media/ic_public_ok.svg',
      isEnabled: true,
    }
  ]

  aboutToAppear(): void {

  }

  build() {
    NavDestination() {
      Column() {
        // web组件加载本地local1.html页面
        Web({ src: $rawfile('local1.html'), controller: this.webviewController })  .height(50)
        Button('keyboardHeightChange', { stateEffect: true, type: ButtonType.Capsule })
          .width('80%')
          .height(40)
          .margin(20)
          .onClick(() => {
            window.getLastWindow(getContext()).then(lastWindow => {
              lastWindow.on('keyboardHeightChange', (data) => {
                this.keyBoardHeight = data
                console.info('keyBoardHeight: '+ data.toString())
              })
            }).catch((err: BusinessError) => {
              console.error('jjxs:Failed to enable the listener for keyboard height changes. Cause: ' + JSON.stringify(err));
            })
          })
        Button('pushPathByName', { stateEffect: true, type: ButtonType.Capsule })
          .width('80%')
          .height(40)
          .margin(20)
          .onClick(() => {
            this.pathStack.pushPathByName('pageOne', null)
          })
      }.width('100%').height('100%')
    }.title('pageTwo')
    .menus(this.menuItems)
    .onBackPressed(() => {
      if ( this.keyBoardHeight>0) {
        let inputMethodController = inputMethod.getController();
        inputMethodController.hideTextInput()
        return true
      }
      this.pathStack.pop()
      return true
    })
    .onReady((context: NavDestinationContext) => {
      this.pathStack = context.pathStack;
      console.log("current page config info is " + JSON.stringify(context.getConfigInRouteMap()))
    })
  }
}